Sian Evans (born 9 October 1971) is a Welsh singer. She is front woman and singer-songwriter of the band Kosheen, a trip-hop/drum and bass group that had their first two albums rise into the top 10 of
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b172a190c1b7aa5c284062764db6929480030c28b68ace266291d6a93d4076f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d75b0956-1554-40a0-8b4a-51a6c8a21ccd.json and https://artists.proofprofile.net/proofs/artist/d75b0956-1554-40a0-8b4a-51a6c8a21ccd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4379b0b36cac3cbcfaee63a6014588b7f3a1d8446d739570f4406acb73813fee. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLF712200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd603b634444b3c702a19f7083b5bf4863b1d9f80fe9490b37abbec7d18a8d0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCEN1101013.
Louder (feat. Sian Evans) - Doctor P & Flux Pavillion Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bba2639fc64f7d47df9ba939e451f279a3e432281caf0c41f17b1880894001c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USQX91201898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b42397d40c0261c25c9995af5a22bad684a7fafc20b180172df7075da68044. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEWA1500648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe051c82615e261fafcc7fa02ad56084c655e19732b1d8b2350fe747365f4e041. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAZG2110432.
A State Of Trance FOREVER Spotlight: AVIRA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f136e9a9f679d4e42a484bd38ba6f776d8cfd0112861ab7a4beedbc8a421e05. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLF712109552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c79f170f3334dc83bf9b99a0272f7a4a9dfe9584340a711d60a5463f2fae1ee. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLF712108247.
Kontor Top Of The Clubs – Best Of 2021 Mix x Best Of 25 Years Kontor Records Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a1d16733b21141058921ceb349b2afb819e76dc6a376e9d70491d836320653. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN062101350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03873277b485739a12da4c63ebe752b8ef8d63bba0a9c1dee08f78e17a728bee. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEWA2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8a9f5eb1c3c80ed930be0caea6cb3205ab3ea497c049fe95fd899bbf75c584. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEWA2100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29d53d32eed3e5c30adf0cd357dc96b31d5a44c264530640ede35d3beb9f18b. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEWA1500660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb356de8b8b73ae4094273dfa71c07c697825f3ebad51ecffa31b662a8601ca. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEWA1907302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd603b634444b3c702a19f7083b5bf4863b1d9f80fe9490b37abbec7d18a8d0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCEN1101013.
Louder (feat. Sian Evans) - Live At Koko
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ba42b1c0467a2e822210b24533e39d512e3da54918fb8d1b1c7d3e86d57cae. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCEN1201112.
Louder (feat. Sian Evans) - Doctor P & Flux Pavilion Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46f17ebb729ca2f90b0dc0c564374bbb2aefed6e8ef982c0b9c436da96a8bbd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCEN1101015.